Adobe Photoshop CC 2014 v.14.xx - Manual (Page 1010)

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3. Make the window containing the 3D model active to see the updated texture applied to the model.
4. Close the texture document and save changes.
Display or hide a texture
You can display and hide a texture to help identify what area of the model the texture is applied to.
Click the eye icon next to the Texture layer. To hide or display all textures, click the eye icon next to the top-level Texture layer.
Create UV overlays
A diffuse texture file used by multiple materials on a 3D model can group several content areas that are applied to different surfaces on the model.
The process called UV mapping matches coordinates in the 2D texture map with specific coordinates on the 3D model. UV mapping allows the 2D
texture to be painted correctly onto the 3D model.
For 3D content created outside Photoshop, UV mapping occurs in the program where the content was created. However, Photoshop can create
UV overlays as guides to help you visualize how a 2D texture map matches up with the 3D model surfaces. These overlays act as guides when
editing a texture.
1. Double-click a texture in the Layers panel to open it for editing.
Create UV Overlays is only enabled when a texture map is open and is the active window.
2. Choose 3D > Create UV Overlays, then select an overlay option.
Shows edge data of the UV mapping.
Shows model areas using a solid rendering mode.
Shows geometric normals translated to RGB values, where R=X, G=Y, and B=Z.
UV overlays are added as additional layers in the Layers panel for the texture file. You can show, hide, move, or delete a UV overlay. The
overlays appear on the model surface when you close and save the texture file, or switch from the texture file to the associated 3D layer (the
texture file is auto saved).
Delete or hide UV overlays before performing a final render.
Reparameterize a texture map
Occasionally you may open a 3D model whose textures are poorly mapped to the underlying model mesh. Poor texture mapping can produce
obvious distortions in the surface appearance of the model, such as unwanted seams or areas of stretching or squeezing of the texture pattern.
Poor texture mapping can also cause unpredictable results when you paint directly on the model.
To check texture parameterization, open a texture for editing, then apply a UV Overlay to see how the texture aligns with the model surfaces.
See
Create UV overlays .
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